private CodeInjectionResult Inject()
{
if (process.Id == 0)
{
return(CodeInjectionResult.ProcessNotFound);
}
byte[] fullInjectedCode = Container.GetBytes();
IntPtr address = ExtensionMethods.AllocateMemory(process, 512);
if (address == null)
{
return(CodeInjectionResult.FailedToVirtualAlloc);
}
alocAdress = address;
if (!ExtensionMethods.WriteBytes(process, address, fullInjectedCode))
{
return(CodeInjectionResult.FailedToWriteInstructionToMemory);
}
//Replace temp return addresses with proper ones
foreach (var Detour in Container.Detours)
{
IntPtr LocationOfReturnJump = IntPtr.Add(alocAdress, Detour.Value.MasterContainerJmpBackLocation.ToInt32());
byte[] backAddy = BitConverter.GetBytes(Detour.Value.InjectionPoint.ToInt32() + Detour.Value.OverridenBytes - (LocationOfReturnJump.ToInt32() + 4));
if (!ExtensionMethods.WriteBytes(process, LocationOfReturnJump, backAddy))
{
return(CodeInjectionResult.FailedToWriteInstructionToMemory);
}
}
//Replace temp addresses with actual position of a variable
foreach (var variable in Container.Variables)
{
foreach (var variableUse in variable.Value.VariableUsage)
{
if (!ExtensionMethods.WriteBytes(process, IntPtr.Add(alocAdress, variableUse.ToInt32()), BitConverter.GetBytes(alocAdress.ToInt32() + variable.Value.VariableLocation.ToInt32())))
{
return(CodeInjectionResult.FailedToWriteInstructionToMemory);
}
}
}
foreach (var Detour in Container.Detours)
{
byte[] DetourInstruction = new byte[Detour.Value.OverridenBytes];
DetourInstruction[0] = 0xE9; //Jmp
for (int i = 5; i < Detour.Value.OverridenBytes; i++)
{
DetourInstruction[i] = 0x90; //Nop
}
IntPtr LocationOfDetourJMP = Detour.Value.InjectionPoint;
byte[] backAddy = BitConverter.GetBytes(alocAdress.ToInt32() + Detour.Value.MasterContainerStartLocation.ToInt32() - (Detour.Value.InjectionPoint.ToInt32() + 5));
backAddy.CopyTo(DetourInstruction, 1);
if (!ExtensionMethods.WriteBytes(process, LocationOfDetourJMP, DetourInstruction))
{
return(CodeInjectionResult.FailedToWriteInstructionToMemory);
}
}
return(CodeInjectionResult.Success);
}